KSC5603D Equivalent & Substitute Parts

Part Overview

The KSC5603D is a Bipolar (BJT) Transistor, NPN type, manufactured by onsemi in a Through Hole TO-220-3 package. This component is rated for 800 V collector-emitter breakdown voltage with a maximum collector current of 3 A and maximum power dissipation of 100 W. The KSC5603D is classified as Obsolete, making identification of suitable substitute components necessary for ongoing design support and procurement continuity.

Substiute Parts

KSC5603D

onsemiIn Stock: 2325KSC5603D Datasheet

Current PartRFQ

KSC5603DTU

onsemiIn Stock: 2375KSC5603DTU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KSC5603D is determined by electrical and mechanical parameter equivalence. The following criteria establish substitution validity:

Electrical Parameters (Must Match):

• Transistor Type: NPN
• Current - Collector (Ic) (Max): 3 A
• Voltage - Collector Emitter Breakdown (Max): 800 V
• Vce Saturation (Max) @ Ib, Ic: 2.5V @ 200µA, 1A
• Current - Collector Cutoff (Max): 100µA
• DC Current Gain (hFE) (Min) @ Ic, Vce: 20 @ 400mA, 3V
• Power - Max: 100 W
• Frequency - Transition: 5MHz
• Operating Temperature (TJ): 150°C

Mechanical Parameters (Must Match):

• Mounting Type: Through Hole
• Package / Case: TO-220-3

The KSC5603DTU qualifies as a direct substitute based on complete electrical and mechanical parameter equivalence with the KSC5603D.

Parameter Comparison

Engineering Selection Recommendations

The KSC5603DTU is the direct substitute for the KSC5603D. Both components are manufactured by onsemi and share identical electrical and mechanical specifications. The primary distinction is product status: the KSC5603D is Obsolete, while the KSC5603DTU is Active.

The KSC5603DTU offers additional compliance advantages. It carries ROHS3 Compliant certification, whereas the KSC5603D does not specify RoHS status. Both components maintain REACH Unaffected status and EAR99 export classification.

For new designs and ongoing procurement, the KSC5603DTU is the appropriate selection due to its Active product status and enhanced compliance documentation. The component is available in Tube packaging and maintains full electrical and mechanical compatibility with the KSC5603D.

Frequently Asked Questions (FAQ)

Q: Can the KSC5603DTU directly replace the KSC5603D in existing designs?

A: Yes. The KSC5603DTU is electrically and mechanically identical to the KSC5603D. All electrical parameters, including collector current, breakdown voltage, saturation voltage, current gain, power rating, and transition frequency are equivalent. Both components use the TO-220-3 package with Through Hole mounting.

Q: What is the primary reason for substitution?

A: The KSC5603D is classified as Obsolete. The KSC5603DTU is the Active equivalent from the same manufacturer, ensuring continued availability and supply chain reliability.

Q: Are there packaging differences between these parts?

A: The KSC5603D packaging is not specified in available documentation. The KSC5603DTU is supplied in Tube packaging. Both components use the TO-220-3 case style for Through Hole mounting.

Q: Do compliance certifications differ between these parts?

A: The KSC5603DTU carries ROHS3 Compliant certification. The KSC5603D does not specify RoHS status. Both components are REACH Unaffected and classified as EAR99 for export purposes.

Q: Are the electrical specifications identical?

A: Yes. Both components share identical specifications: 800 V breakdown voltage, 3 A maximum collector current, 100 W power dissipation, 5 MHz transition frequency, 2.5 V saturation voltage at specified conditions, 100 µA collector cutoff current, and 20 minimum DC current gain at specified conditions.

Q: What is the operating temperature range?

A: Both components operate to a maximum junction temperature (TJ) of 150°C.